Die head



Jan. 22, 1929. 1,699,994

H. T. SHEARER DIE HEAD I Original Filed Oct. 26. 1922 3 sh t -she t l a(for may,

Jan. 22, 1929. Y 1,699,994

H. T. SHEARER DIE HEAD Harry T Shearer Illl 3 Sheets-Sheet H. 'r.SHEARER DIE HEAD Original Filed 001;. 26. 1922 Jan. 22, 1929 61th): an

MW Harr T. Shearer Patented Jan. 22, 1929.

UNITED STATES.

PATENroFI-lcE, U

HARRY THOMPSON sH EAnER, or WAYNESBORO, PENNSYLVANIA, ASSIGNOR 'roLANDIS M CHINE COMPANY, or wAYNEsBono, PENNSYLVANIA, A con'ronA'rIoN OFPENNSYLVANIA.

DIE HEAD.

' Application file'd October 26, 1822, Serial No. 587,199. RenewedDecember 7, 1928.

My said invention consists in an'improved die head of the type shown inthe patent to Landis 948,893, February 8, 1910 and intended'primarilyfor use as acutter head of. the revolving type in which the work movestoward the head, the head having no bodily movement in the direction ofits length. It is an object of the invention to rovide the head withinternal tripping mec anism and means at the front of the head foractuating said tripping mechanism. v A further object is to provide anactuating device of the characterabove set forth which shall comprise acombined reamer and chamfer of an improved type.

.Other objects and advantages of the device will appear from thesubj'oined description.

Referring to the accompanying drawings which are made a art hereof andon which similar reference 0 aracters indicate similar parts,

Figure 1 is a face view of my improved device, Y Figure 2 a rear viewofthe same, 7

Figure 3 a central section on 1ine'33 of Figur 1, I

Figure 4 a partial section on line 44-4: of Figure 1,

Figures 5, 6, 7 and 8 are sections respectively on lines 55, 66, 7-7and'8--8 of Figure 3, o

Figure'9 is a section of the outer shell of the device showing the partsin closed position, v 1 Figure 10 is a fragmentary section in the sameplane showing the parts in open position,

Figures 11, 12 and 13 are fragmentary views showing the differentpositions as.- sumed by the locking pins, and I Figure. ltiis a fragmentshowing one of the lost motion connections between two parts of the ringframe and the means for limiting such lost -motion.

In the drawings reference character 15 indicates a holding or drivingdevice'for the head which may be a shaft but is here shown as a shankadapted to be held in a chuck of substantially cylindrical part but maybe made in several parts. secured together in any convenient manner andis surrounded by a ring frame comprising a series of rings 18, 19, 20,21 and 22. The rings 18 and 20 are secured together by a series ofscrews 23 which also act to position the ring 19 between said rings 18and 20, ring 19 being held against. rotation by the customary yoke. Ring20 is shown as made cored out, but this is merely for lightness andsaving of metal. .11; ma be solid, like rin 21 if preferred. The rlngs20 and 2 1 are eld against relative rotation by pins 24 engagingregistering openings therein. These, pins are held in place by setscrews 25 and when the rings arein closed position as shown in Figure 9their forward ends engage openings 1n the ring 22 which therefore isalso held against rotary movement relatively to the remaining rings. Theopenings in ring 22 have located therein bushings 26 beveled at theouter end and as the pins are retracted the rings may move relatively assoon as the tapering end portionsrof the pins pass over the beveledportion of the bushings. As will be seen from Figure 9 two or more ofthese tapered pins are provided and engage corresponding openings inring 22.-

The ring 22 is held in place on the body 17 by a ring 27 engagingregistering annular recesses in the faces of the two members and securedin place in any convenient manner, as by screws engaging the body. Ashaft 28 is mounted in a bore of the ring 21 and has threads forming aworm engaging'worm teeth 29 on the body 17. It'will be seen that therings 18, 20 and 21 rotate with the body but may rotate about the sameto change the size/of the. die while for opening and closing the die thering 22 may rotate to a limited extent independently of the body whenthe pins are retracted (Fig; 10). It will also be seen that the rings 21and 22.are'held betweenring 27 and an annular shoulder 30 .on

the body, being thereby prevented from longitudinalmovement relativelyto the body, while the remaining rings are movable longitudinally of thebody to eifect the unlocking of pins24 from ring 22. This movement islimited by bolts 31 having threaded engagement with ring 2Q and havingheads movable in openings of ring 21. I

The ring 22 is connected in known manner by a pin and slot connection at32 to'each of" a series of blocks 32 fixed to trunnions 83 which formpivotal supports for the blocks. Each of these blocks as here shown isadapted to hold a flat chaser 34 though not necessarily limited to suchuse. The chasers 34 are fixed in pTace by clamps'34 fastened to theblocks by means of screws. Relative rotary adjustment of rings 18, 20,21, 22 and body 17 changes the closed position of ring 22 and thereforevaries the cutting position of the chasers in accordance with the siz ofthe work while rotation of rin 22 relative the position of the pins 24when the cutter jaws are closed being indicated in Figure 11 whileFigures 12 and 13 indicate the positions assumed by the pins when thedevice is opened by a movement either to right or left according to thearrangement of the cutter blocks' As described above the openiug andclosing of the cutterblocks is effected by the longitudinal movement ofrings 18, 19 and 20 relatively to the body, whereby pins 24 are broughtinto locking and unlocking relation with ring 22. The same longitudinalmovem'ent of rings 18, 19 and 20 for opening the head is secured as hereshown 'by means of a trip device arranged internally of the head andcomprising a rod or a plurality of rods 36 with heads engaging the ring18. These rods are held in a spider formed on a sleeve 37 and providedwith bores in which they are clamped. The sleeve 37 has a squaredcentral opening threaded at its rear end in which engagesthe threadedportion of a sleeve 38, Forwardly of the sleeve 38 a hollow block 39 isslidably mounted in the sleeve 37, the squared outer pprtion of theblock corresponding to the squared inner surface of the sleeve. At itsforward end the block has an enlarged part with a squared opening(Figure 8) in which is engaged the squared rear end of a combinedreaming and ch'amfering device 40 for reaming out the inner surface andchamfering the end of a pipe which is being threaded. This device, aswill be evident, also forms the "actuating means for the trippingmechanism. At its rear end the block 39 has a cylindrical openingthrough which passes a shaft having threaded engagement with the shankof member 40 and having it its other end a collar 42 and a squared head43. The collar 42 bears against the rear end of sleeve 38 and issurrounded by a sleeve 44 keyed to sleeve 38 and roviding a handle forturning said sleeve. 3 handle 44 may be turned to adjust the sleeve 38and thus vary theposition of the block y backing off the shaft 41.

a length of pipe is engaged by the tangential V chasers 34 as the headrotates relatively to the pipe and thereupon the pipe is drawn inwardlyrelatively to the head as the thread is cut. WVhen the pipe has traveleda predetermined distance the combined rea'mer and chamfer 40 engages theend of the pipe and shapes it in the desired. manner. The

surface 46 between the cutting edge 47 which.

chamfers the outside and the cutting edge 48 which reams the inside ofthe pipe is not a cutting edge and as the end of the pipe goes againstthis surface or surfaces head 40 with its connecting parts is forcedback by the advance of the pipe. This moves sleeve 37 with its pins orrods 36 backward, moving with it rings 18, 19 and 20 and with them pins24, which are secured to ring 20, and so disengages pins 24 frombushings 26 in ring 22. The outward pressure of the cut combined withthe outward pressure of springs 35 exerted against the chaser holders 32rotates ring 22 about the die head thus moving the chaser holders ontheir pivots outward" from the axis of the head to open the head. Therotation of the ring can only begin when the conical ends of pins 24start out of the bushings 26 and would then continue until the pins leftthe bushings and moved to one side thereof if no means were provided 'tolimit such movement. .The

means to limit the relative rotation of ring 22 and the remainder of thedie head consists of one or more bolts 31 (usually several spaced atequal distances about the'axis of Min the head). As the ring 22 movesabout the other parts of the head the ring 20 is, forced backwardtogether with rings 18 and 19 and pins 24, i. e. the parts are passingfrom the position of Figs. 1, 9, 11 and 14 to that of Figs. 10 and 13.hen the head of bolt 31 seats itself at the bottom of the recess in ring21 there can be no further rearward movement of the rings 18, 19 and 20relative to the head body, and there can be no relative'circummferential movement of ring 22 and the head body unless the tipof the cone on each pin 24 has passed out of the bore of its bushing.Hence the length of the bolt 31, or strictly the distance from theunderside of its head to the seat for the head, determines the arc ofrotary or oscillatory move ment of the closing, ring 22.

For closing the die head the ring 19 is moved forward by means of a yokeor lever of conventional type engaging forks on the ring. Since thetapered parts of the pins 24 are in engagement with'the flaring surfacesof bushings 26, disengagement being prevented by engagement of the'headsof bolts 31 with the bottoms of the recesses in ring'21 or such movementof ring. 19 whichhave marks at its rear side to register withgraduations on the outer surface'of the body 17 and indicate therelative positions of the parts.

I may substitute for the reamer shown in the drawings, a block adaptedto contact with the bolt or pipe being threaded and serving only as anactuating device for the trip mechanism.

' body and adapted for movement longitudi- It will be obvious tothoseskilled in the a artithat many other variations may be made in my devicewithout departing from the spirit of the =invention, thetrue sco e ofwhich in indicated in the appended c aims.

Having thus fully described my said in-- .vent-ion, whatI olaimas newand desire to secure by Letters Patent is: 7 v

1; A die head comprising a ring frame, a body in the frame,cutter-carrying'blocks mounted on the body and adapted to be opened andclosed by relative rotarymovement of said body and the front ring ofsaid frame, and automatic means located in-' ternally of the die headfor opening the same said means including an actuatmgde vice projectingfrom, the face ofthe die head and means operable from'the rear end ofthe die head for varying the axial posltlon of said device,substantially asset forth.

2. A die head comprising a body, blocks mounted on the body, tangentialchasers on said blocks, a ring extendingaboutthe body and rotatablerelatively thereto the ring'being connected to said blocks foropeningand closing the head, a ring extending about the nally thereofsaid ring carrying spaced loclo ing pins for holding. the rotary ring,1n closed position, and awork engagingmember projecting from ,the faceof the head and connected to the longitudinally movable ring forreleasing said rotaryring, substantially as set forth. j

4 3. A die head comprising a body, blocks mounted on the body,tangential chasers carried by said blocks, a'ring extending about thebody and rotatable relatively thereto the ring being connected to saidblocks for opening and closing the head, a

second ring surrounding the body, means for adjusting the second ringabout the body," a third ring movable longitudinally of the-body, pinsextending from the latter.

ring through the second named ring and adapted to engage openings in therotatable ring, and means and connected to he longitudinally movable rinfor retractin said, ins from the rob v D tatablering', substantiallyasset forth 4. A die head comprising a body, cutter- I apted toengage theworkl carryingblocks' mounted on the body, a ring extending about thebodyandrotatable relatively theretb said ring being connected to thecutter-carrying blocks for opening and closingthe head, meansforholdingthe ring against rotation inclu ing a pin movablelongitudinally of the head and having atapered end for engaging anopening in the rotatable ring, a' bushing in the opening, and

means .to limit the relative movement be-. tween said pin and therotatable ring .to'

prevent the point of the pin from passing beyond the periphery of thebushing, substantially as set forth.

5. A die head comprising a body, blo clrs' mounted on the body,tangential chasers car 7 ri'ed by said blocks, means on the front facesof the blocks for locking the chasers in place,

a ring'extending about the body and rotatable relatively thereto thering being (onnected to said blocks for openingand closing the head, aring movable longitudinally .of the head and having means to engage therotatable ring for holding it in closing position, a spider locatedinternally ofthe head, pins on the spider engaging the'longitudinallymovable ring, and work engaging means projecting forwardly from thespider and adapted to be moved rearwardly by contact with the work tomove the spider and the i'ing connected thereto for releasing therotatable ring, substantially as set forth; 6. A die head comprisinga,body,- cuttercarrying blocks mounted on thebody, a ring extendingabout the" body and rotatable relatively thereto said ring beingconnected to the cutter-carrying blocks for opening and closing thehead, a ring movable longitudie nally ofthe head and having means toen-- gage ,the rotatable ring" for holding it -in closing position, aspider located internally of the head, 'pins' on the spider engaging thelongitudinally IDOX'QblGgIlIlQ and work engaging means projecting[forwardly from U the spider "and adapted to be moved rearwardly bycontact with thework to move the spider and thering connected theretofor releasing the rotatable ring, said'work engaging means comprising ashaping ele-- ment for the work,substantially as setforth.

7. A die head comprising abody, blocks mounted on; the body, adjustabletangential chasers on the blocks, clamps on the blocks for holding thechasers in adjusted position, a ring extending about the body androtatable relatively thereto said ring being connected to the blocks foropening and closing the head, a ring movable longitudinally of the headand having means to engage the rotatable ringfor holding it in closingposition, a spider located internally of the head, pins on the spiderengaging the longitudinally movable ring, said spider having alongitudinal opening, a block slidable in said opening, means forpreventing relative rotation between the a tool fixed to the block forrotation therewith and means for adjusting the block longitudinally ofthe spider, substantially as set forth.

8. A die head comprising a body, blocks mounted on the body, adjustabletangential chasers on the blocks, clamps on the front faces of theblocks for holding the chasers in adjusted position, a ring surroundingthe body and rotating relatively thereto said ring being connected tothe blocks for opening and closing the head, a ring movablelongitudinally of the head and having means to engage the rotatable ringfor holding it in closing position, a spider located internally of thehead, pinson the spider engaging the longitudinally movable ring, saidspider having a longitudinal opening, a block slidable in said opening,a threaded sleeve behind the block engaging threads in saidopening,means for preventing relative rotation between the block and the spider,a rod extending axially of the die head, a work-engaging device threadedon the front end of the rod, means to hold said device from rotationindependently of the block, and means on the rod engaging the rear endof the threaded sleeve whereby rotation of the rod locks the sleeve inadjusted position, substantially as set forth.

9. A die head comprising a body, blocks mounted. on the body, tangentialchasers on the blocks, means for clamping the chasers in place, a ringmounted on the body and rotatable relatively-thereto said ring beingconnected to the cutter blocks for opening and closing the head, a ringmovable longitudinally of the head and having means to engage therotatable ring for holding it in closing position, a spider locatedinternally of the head, pins on the spider engaging the longitudinallymovable ring, said spider having a longitudinal opening, a blockslidable in said opening, means for preventing relative rotation betweenthe block and the spider, a tool having a shank engaging an opening inthe block and held against rotation relative thereto, a hollow shafthaving internal threaded engagement with the spider adapted to move theblock longitudinally thereof and a rod in saidshaft having block and thespider,

threaded engagement with the shank of the ring mounted to oscillateabout the body said blocks being connected to the latter ring foropening and closing the head, one or more pins passing through the firstring and engaging the second ring to lock the head in closed position, aring movable axially of the body, and work-engaging means connected tosaid pins through the lastnamed ring to open the head at a predeterminedpoint in its operation, substantially as set forth.

11. In a cutter head, a body, a ring mounted to oscillate about the bodyfor opening and closing the head, cutter holders pivotally connected tothe head and the ring, tangentially adjustable cutters on the holders,means for locking the ring aga nst movement, and an abutment arrangedaxially of the head connected to the locking means for'engaging the workat a predetermined stage of operation to unlock the rmg and open thehead, substantially as set forth.

12. In a cutter head, a body, cutters carried thereby, a ,ring mountedto oscillate about the body said ring being connected to the cutters foropening and closing the head, means for locking the ring againstmovement, a ring slidable lengthwise of the body to unlock theoscillatory ring, a rodlike element movable axially of the body, a headon said element to engage the work, and a spider connecting said rod tothe slidable ring, substantiall as set forth.

13. In a cutter hea a body, cutters carried thereby, a ring mounted tooscillate about the body said ring being connected to the cutters foropening and closing the head, means for locking the ring againstmovement, a ring slidable lengthwise of the body to unlock theoscillatory ring, a rodlike element movable axially of the body, a headonsaid element to engage the work, a

spider connecting said rod to the slidable ring, and means to limit therearward movement of the slidable ring, substantially as set forth.

14. In a cutter head, a body, cutters carried thereby, a ring mounted tooscillate about the body said ring being connected to the cutters foropening and closing the head, means for locking the ringa-gainsti'movement, a ring slidablelengthwise of the body to unlock theoscillatory ring, a rod-like element movable axially of the body, a head'on the rod to engage the Work,'a spider connecting said element to theslidable' ring, and means to limit the rearward movement of the.slidable ring including yielding means tending to return the slidablering to locking position, substantially as set forth.

15. In a cutter head, a body, cutters carried thereby, a ring mounted tooscillate about the body said ring being connected to the cutters foropening and closing the head, means for locking the ring againstmovement, a ring slidable lengthwise of the body to unlock theoscillatory ring, a rod-like element movable axially of the body, a headon said element to engage the work, a spider connecting said element tothe slidable ring, and meansto limit the rearward. movement of theslidable ring including bolts having heads arranged to engage positlvestops fixed to the body, substantially as set forth. 16. In a die head,a body, cutter jaws on the body, means for opening and closing the Ihead, means to lock the head closed, and

means to release said locking means after a predetermined operationincluding a spider, work-en aging means held against rotation indepenently of the spider, connections from said work-engaging means forreleasing said locking means, and means extending into the spider foradjusting such work engaging means to vary the period of operation ofthe cutters, substantially as setforth."

17. In a cutter head, a body, cutters carried thereby, a rin -frameincluding a ring mounted to oscillate about the body said ring beingconnected to the cutters for opening and closing the head, means forlocking the ring against movement, a ring movable endwise of the body,means on the ring-frame for limiting the endwise movement of saidlast-named ring, and connections between said rings for unlocking theoscillatory ring 'on movement of the other ring in one direction saidconnections being arranged and constructed to limit the opening movementof the oscillatory ring, substantially as set forth.

18. A die head comprising a body, cutter-carrying blocks mounted on thebody, a ring extending about the body and rotatable relatively theretosaid ring being connected to the cutter-carrying blocks for opening andpassing beyond the outer limit of the beveled portion of said bushing,substan tially as set forth.

In witness whereof, I have hereunto set my hand at Waynesboro,Pennsylvania, this 25th day of October, A. D., nineteen hundred andtwenty-two.

HARRY THOMPSON SHEARER.

